真空退火炉PLC自动控制系统设计题库.doc

课题名称 真空退火炉PLC自动控制系统设计 院/专 业 班 级 学 号 学生姓名 毕 业 指导教师： 2016年5月24日摘 要 本篇文章主要讲的是真空退火炉的PLC控制系统的设计。大家都知道真空退火炉是金属热处理中的重要设备，度是退火炉的主要被控变量，是其产品质量的一个重要。退火炉温度控制的稳定性和精度直接影响产品的质量PLC的输入输出点的分配表以及通用存储器的分配表，画出PLC原理图，编写出PLC程序。最后由于循环水阀门仍需人凭借经验手动开启，最后介绍了模糊控制的原理以待备用。 关键字：真空退火炉 PLC 模糊控制  ABSTRACT This article is mainly about the design of PLC control system of vacuum annealing furnace. We all know that vacuum annealing furnace is a kind of many metal heat treatment process is very important and indispensable equipment, vacuum and temperature is mainly controlled variable vacuum annealing furnace, precise control of temperature and vacuum is to ensure a one of the important guarantee of the quality of the product. Also said, the accuracy and stability of furnace temperature and vacuum control will directly affect the quality of the products. The graduation design of vacuum annealing furnace temperature vacuum degree of PLC automatic control system based on PLC to realize the automatic control of temperature and vacuum degree not only to achieve precise control of the electric machine can avoid the unnecessary losses. In the main part of the thesis, introduces the components and functions of the principle and design of process equipment, using zirconium wire vacuum Annealing process, for example, draw annealing process flow diagram. Then make a list of the PLC input and output point allocation table and of a universal memory allocation table, draw the PLC schematic written PLC program. At the end of the circulating water valve still require the person with manual opening of experience. At last, the paper introduces the fuzzy control principle to wait for backup. Key Words: vacuum annealing furnace PLC fuzzy control 目 录 第一章 绪论 1 1.1选题背景及研究意义 1 1.2 国内外研究现状和发展 1 1.3本文研究的主要内容 2 第二章 真空退火炉的工作原理与工艺过程分析 3 2.1真空退火炉的结构分析 3 2.2 真空退火炉工作原理 4 2.3技术指标分析 5 2.4退火工艺过程分析 6 第三章真空退火炉PLC控制硬件系统的设计 7 3.1 控制系统总体布局 7 3.2控制系统设计方案 7 第四章真空退火炉软件系统的设计 10 4.1 输入输出分